That doesn't even appear to be attempting to address anything relevant to consumer networking. It's a purely enterprise-focused project, mostly about putting a Debian-based OS onto rackmount ethernet switches.
>That doesn't even appear to be attempting to address anything relevant to consumer networking
Don't be too pessimistic, anything that can contribute to the disaggregation of networking technology will be good for the consumer markets since the companies producing these networking SoC namely Qualcomm, Mediatek, etc should care about their downstream revenues. By adopting the open eco-system champion by SONiC and DENT for networking technology disaggregation, it will definitely spill over to the consumer networking as well since these are the very same companies that design and manufacture the networking pervasive consumer networking SoC.
There are too many and numerous examples of Linux enterprise features that are spilling over to consumer Linux, and the latest is the real-time Linux kernel extensions although it did take like forever (i.e 20 years) to be adopted by the main line Linux kernel.